Artificial impedance surfaces for reduced dispersion in antenna feeding systems

George Goussetis, Jose Luis Gomez-Tornero, Alexandros P. Feresidis, Nikolaos K. Uzunoglu

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

An impedance surface is presented that reduces the dispersion experienced upon propagation of broadband pulses within rectangular waveguides. The surface impedance is selected so that, within a frequency range, the transverse resonance condition is satisfied for longitudinal wavenumber that varies linearly with frequency. A synthesis procedure for practical surface topologies consisting of periodic dipole arrays is described. An example involving a finite structure is employed to illustrate the reduced dispersion. Numerical simulation results obtained from in-house mode-matching method as well as HFSS are presented. A prototype is fabricated and tested experimentally validating the theoretical predictions.

Original languageEnglish
Pages (from-to)3629-3636
Number of pages8
JournalIEEE Transactions on Antennas and Propagation
Volume58
Issue number11
DOIs
Publication statusPublished - Nov 2010

Keywords

  • design
  • pulse transmission
  • dispersion compensation
  • propagation
  • frequency selective surfaces
  • wave guide
  • waveguide dispersion
  • artificial surfaces
  • surface impedance
  • metamaterial

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